| Leiria to Sestu | 952.47 mi (1,532.85 km) |
| Leiria to Settimo Torinese | 920.74 mi (1,481.79 km) |
| Leiria to Seveso | 994.87 mi (1,601.08 km) |
| Leiria to Sezze | 1,149.97 mi (1,850.70 km) |
| Leiria to Siano | 1,236.90 mi (1,990.61 km) |
| Leiria to Siena | 1,067.14 mi (1,717.40 km) |
| Leiria to Signa | 1,059.80 mi (1,705.59 km) |
| Leiria to Silea | 1,142.06 mi (1,837.97 km) |
| Leiria to Silvi Paese | 1,204.06 mi (1,937.75 km) |
| Leiria to Sinalunga | 1,086.50 mi (1,748.56 km) |
| Leiria to Siniscola | 976.52 mi (1,571.55 km) |
| Leiria to Sinnai | 958.34 mi (1,542.30 km) |
| Leiria to Siracusa | 1,313.16 mi (2,113.32 km) |
| Leiria to Solaro | 991.81 mi (1,596.16 km) |
| Leiria to Soliera | 1,062.94 mi (1,710.63 km) |
